Buried lede: this is, in large part, a self-created problem. Many states set restrictions on where people who are registered sex offenders are allowed to live (e.g. disallowing them from living close to schools and day care centers), and those restrictions can make it much more difficult for these people to find housing.
(Anecdotally, I've heard of situations where these restrictions effectively ban sex offenders from living anywhere in a city, because the overlapping exclusion zones leave nothing uncovered.)
(Anecdotally, I've heard of situations where these restrictions effectively ban sex offenders from living anywhere in a city, because the overlapping exclusion zones leave nothing uncovered.)